Astronomy quiz

What is astronomy?

• The cosmos

• Stars in the sky

• The study of outer space

• Space travel

What is a star?

• Lights in the sky

• A huge ball of hot gas

• A cloud of dust

• Supernova

What is a galaxy?

• A spiral

• A huge family of stars

• A sun and the planets

• A universe

What is a solar system?

• Lots of stars

• Planets around a star

• Hot gas and dust

• A planet with moons

How many planets are in our solar system?

• 8

• 19

• 52

• 4

How many days are in an earth year?

• 687

• 243

• 365

• 88

What is the smallest planet in our solar system?

• Neptune

• Pluto

• Mercury

• Jupiter